Graphical indicators in analog clock format

ABSTRACT

Some aspects relate to display of a plurality of graphical indicators on a display, each of the plurality of graphical indicators associated with a respective time interval, wherein, for each of the plurality of graphical indicators, a length of the displayed graphical indicator represents a value of a metric associated with the respective time interval of the graphical indicator, wherein first ends of each of the plurality of graphical indicators substantially trace an arc of a circle, and wherein, for each graphical indicator, a position of the first end of the graphical indicator on the arc of the circle indicates the respective time interval associated with the graphical indicator.

CROSS REFERENCE TO RELATED APPLICATION

This is a continuation of co-pending prior U.S. patent application Ser. No. 14/250,590, filed on Apr. 11, 2014, entitled “GRAPHICAL INDICATORS IN ANALOG CLOCK FORMAT”, which is incorporated herein by reference in its entirety for all purposes.

BACKGROUND

Field

The embodiments described below relate to the generation and presentation of time-related data. Some embodiments relate to the display of a graphical indicator to represent a value of a metric and a time interval associated with the value.

Description

Modern computing systems collect large amounts of data. The collected data may be processed in order to generate even more data. A user's ability to determine facts and trends based on such data is often hampered by the volume and complexity of the data.

Visualizations (e.g., charts, graphs, etc.) may be used to present data to users. Typically, the goal of a visualization is to convey data to users in an easy-to-understand format. Time-related data presents special considerations. For example, a visualization of time- related data should efficiently convey both data and associated time periods. These concerns are exacerbated for visualizations presented on small display screens, which are increasingly common.

Systems are desired for efficiently presenting time-related data.

SUMMARY

Some embodiments relate to a device, method, and/or computer-readable medium storing processor-executable process steps to display a plurality of graphical indicators on a display, each of the plurality of graphical indicators associated with a respective time interval, wherein, for each of the plurality of graphical indicators, a length of the displayed graphical indicator represents a value of a metric associated with the respective time interval of the graphical indicator, wherein first ends of each of the plurality of graphical indicators substantially trace an arc of a circle, and wherein, for each graphical indicator, a position of the first end of the graphical indicator on the arc of the circle indicates the respective time interval associated with the graphical indicator.

In some aspects, the value of the metric associated with a respective time interval is indicative of physical activity during the respective time interval. For example, the metric may be step count, heart rate, distance traveled, activity level, altitude ascended, altitude descended, floors climbed, or calories burned.

According to some aspects, arcs of the circle represent a plurality of time intervals totaling one hour, but other time intervals may be represented (e.g., twelve hours, twenty-four hours). Moreover, the angular distance of the arc of the circle may indicate the current time.

A current time may be displayed within the circle. In some aspects, displayed within the circle may be a current value of a step count, a current value of a heart rate, a current value of a distance traveled, a current value of an activity level, a current value of an altitude increase, a current value of floors gained, or a current value of calories burned.

In some aspects, one of the plurality of graphical indicators associated with a respective time interval comprises M graphical icons, and M represents a value of the metric associated with the respective time interval.

According to some aspects, a plurality of graphical indicators are displayed on a display, each of the plurality of graphical indicators comprising a respective number of graphical icons and associated with a respective time interval, wherein first ends of each of the plurality of graphical indicators substantially trace an arc of a circle. For each graphical indicator, the respective number of graphical icons of the graphical indicator represents a value of a metric associated with the respective time interval of the graphical indicator, the value of the metric being indicative of physical activity during the respective time interval, and, for each graphical indicator, a position of the first end of the graphical indicator along the arc of the circle indicates the respective time interval associated with the one of the plurality of graphical indicators.

Further aspects include detection of a signal indicative of physical activity, and determination of the value of the metric associated with a respective time interval based on the signal. In some aspects, a current time is displayed within the circle, wherein the angular distance of the arc of the circle indicates the current time. One of the plurality of graphical indicators associated with a respective time interval may include M graphical icons, wherein M represents a value of the metric associated with the respective time interval.

According to some aspects, a plurality of graphical indicators are determined, each of the plurality of graphical indicators associated with a respective time interval; and data representing the plurality of graphical indicators is transmitted to a device comprising a display screen. For each of the plurality of graphical indicators, a length of the displayed graphical indicator represents a value of a metric associated with the respective time interval of the graphical indicator. First ends of each of the plurality of graphical indicators substantially trace an arc of a circle, and, for each graphical indicator, a position of the first end of the graphical indicator on the arc of the circle indicates the respective time interval associated with the graphical indicator.

A more complete understanding of some embodiments can be obtained by referring to the following detailed description and to the drawings appended hereto.

BRIEF DESCRIPTION OF THE DRAWINGS

The construction and usage of embodiments will become readily apparent from consideration of the following specification as illustrated in the accompanying drawings, in which like reference numerals designate like parts, and wherein:

FIG. 1 is an outward view of displayed graphical indicators according to some embodiments;

FIG. 2 is an outward view of displayed graphical indicators according to some embodiments;

FIG. 3 is a block diagram of a device according to some embodiments;

FIG. 4 is a block diagram of a device according to some embodiments;

FIG. 5 is a top perspective view of a device according to some embodiments;

FIG. 6 is a bottom perspective view of a device according to some embodiments;

FIG. 7 is a flow diagram of a process according to some embodiments;

FIG. 8 is an outward view of displayed graphical indicators and a current time according to some embodiments;

FIG. 9 is an outward view of displayed graphical indicators and a current time according to some embodiments;

FIGS. 10A and 10B comprise a flow diagram of a process according to some embodiments;

FIG. 11 is an outward view of displayed graphical indicators and a current time according to some embodiments; and

FIG. 12 is an outward view of displayed graphical indicators and a current time according to some embodiments.

DETAILED DESCRIPTION

The following description is provided to enable any person in the art to make and use the described embodiments. Various modifications, however, will remain readily apparent to those in the art.

A specific example will now be described with reference to FIG. 1 in order to provide an introduction to various features. Embodiments are not limited to the features or description of this example.

FIG. 1 is an outward view of visualization 100 displayed on display 105 according to some embodiments. A specific example will now be described with reference to visualization 100 in order to provide an introduction to various features. Embodiments are not limited to the features or description of this example.

According to the example, visualization 100 includes several graphical indicators (e.g., 110A, 110B, 110C, 110D and 110E). The length of a graphical indicator represents a heart rate over a time interval. For example, each dot of a graphical indicator represents 30 beats per minute (BPM). Therefore, indicator 110A, which includes three dots, represents 90 BPM.

The position of the graphical indicator indicates the time interval associated with the graphical indicator. Continuing the present example, graphical indicator 110A is positioned at the ‘0’ minute position of a traditional analog clock layout, therefore graphical indicator 110A is associated with the 60th minute of the prior hour. More specifically, graphical indicator 110 a indicates a heart rate of 90 BPM over the 60th minute of the prior hour.

Similarly, graphical indicator 110B indicates a heart rate of 150 BPM over the first minute of the current hour, graphical indicator 110C indicates a heart rate of 90 BPM over the second minute of the current hour, graphical indicator 110D indicates a heart rate of 150 BPM over the third minute of the current hour, and graphical indicator 110E indicates a heart rate of 60 BPM over the forty-first minute of the current hour. Accordingly, some embodiments efficiently convey values associated with respective time intervals in an intuitive manner which can be quickly grasped by a user.

More generally, embodiments are not limited to the graphical indicators of FIG. 1. Each of the plurality of graphical indicators represents a value of a metric. The metric may comprise any metric that is or become known. According to some embodiments, the metric is one of step count, heart rate, distance traveled, activity level, altitude changes, altitude ascended, altitude descended, floors climbed, and calories burned. The metric may be indicative of physical activity, but embodiments are not limited thereto.

In the present disclosure, the term “activity” includes sedentary and nonsedentary activities. As such, the metric may be associated with activities related to sleeping, lying, sitting, and standing stationary (for example, time asleep, the onset, duration, and number of awakenings while attempting to sleep, the time spent in various stages of sleep, sleep latency, sleep efficiency and other sleep quality parameters, the presence of sleep apnea and other diagnostic measures, time spent in a prone non-standing state, and resting heart rate).

A length of a displayed graphical indicator represents a value of the metric. For example, a longer graphical indicator may represent a higher heart rate than a shorter graphical indicator. According to a more specific example, a length of a graphical indicator may conform to a predetermined ratio of length/metric value (e.g., 0.1 inch/10 beats per minute). Any suitable ratio may be implemented in some embodiments, and may be dependent upon a size of display 105.

Each of the plurality of graphical indicators of FIG. 1 includes a number of graphical icons, but embodiments are not limited thereto. The graphical icons of visualization 100 comprise dots, but one or more other icons may be used. Each graphical icon represents a value of the metric associated with the graphical indicator. For example, each graphical icon may represent 10 steps, such that graphical indicator 110A, which includes three dots, represents a step count of 30.

According to some embodiments, the graphical icons of a graphical indicator may exhibit different colors. Different colors may represent different values of a metric. For example, a blue icon may represent 30 BPM and a red icon may represent 1 BPM. Accordingly, a graphical indicator consisting of two blue icons and three red icons may represent a value of sixty-three BPM.

Each of the plurality of graphical indicators represents a value of a metric and a time interval. The time interval associated with a graphical indicator is indicated by a position of the graphical indicator. More specifically, the ends of each graphical indicator substantially trace an arc of a circle, numbered 120 in FIG. 1. Arc 120 may or may not be displayed according to some embodiments. The position of an end of a graphical indicator on arc 120 indicates the time interval associated with the graphical indicator.

Distal ends 115 of graphical indicators 110A through 110D are located on arc 120 at the :00, :01, :02 and :03 positions of an analog clock, respectively. As described in the above example, these positions correspond to time intervals which are one minute in length. The time intervals associated with each graphical indicator may exhibit any duration. For example, each position of an end 115 may correspond to a five minute interval, a ten minute interval, or an interval of any duration. In a case that a complete circle includes sixty graphical indicators and corresponds to twelve hours, each graphical indicator is associated with a twelve minute interval. Similarly, in a case that a complete circle includes sixty graphical indicators and corresponds to twenty-four hours, each graphical indicator is associated with a twenty-four minute interval.

FIG. 2 is an outward view of visualization 200 according to some embodiments. Visualization 200 is identical to visualization 100 excepting that each graphical indicator of visualization 200 is a solid, as opposed to a dotted, line. Again, the length of a graphical indicator of visualization 200 represents a value of a metric over a time interval, the ends of each of the graphical indicators substantially trace an arc of a circle, and a position of an end of a graphical indicator on the arc of the circle indicates the time interval associated with the graphical indicator.

Embodiments are not limited to the graphical indicators described above and/or illustrated in FIGS. 1 and 2. A visualization according to some embodiments may include two or more types of graphical indicators. A visualization according to some embodiments may include additional elements, examples of which will be provided below.

FIG. 3 is a block diagram of system 300 according to some embodiments. System 300 may be operated to generate and/or display a visualization according to some embodiments. System 300 includes one or more processing units 310 (e.g., processor cores and/or processing threads, discrete or integrated logic, and/or one or more state machines, and/or field programmable gate arrays (or combinations thereof)). One or more processing units 310 are configured to execute processor-executable program code to cause system 300 to operate as described herein, and memory 320 for storing the program code and any other suitable data, including but not limited to values of metrics associated with respective time intervals. Memory 320 may comprise one or more fixed disks, solid-state random access memory, and/or removable media (e.g., a thumb drive) mounted in a corresponding interface (e.g., a USB port).

Display interface 330 provides communication with display 340, which may comprise any system for visual presentation of information that is or becomes known. Display 340 may comprise a touch screen for receiving user input into system 300 according to some embodiments.

One or more processing units 310 may therefore execute processor-executable program code stored in memory 320 to cause system 300 to determine a plurality of graphical indicators associated with respective time intervals, wherein a length of each graphical indicator represents a value of a metric associated with the respective time interval of the graphical indicator, and to display the plurality of graphical indicators on display 340, wherein first ends of each of the plurality of graphical indicators substantially trace an arc of a circle, and wherein, for each graphical indicator, a position of the first end of the graphical indicator on the arc of the circle indicates the respective time interval associated with the graphical indicator.

According to some embodiments, system 300 comprises an integrated device such as, but not limited to, a wearable unit (e.g., around wrist, around neck) or an otherwise portable unit (e.g., a smartphone, a dedicated music player, a fob). In some embodiments, elements of system 300 may be embodied in separate devices, such as a server device (e.g., a desktop computer) including elements 310, 320 and 330, and a terminal device (e.g., a watch) including display 340. System 300 may perform functions other than those attributed thereto herein, and may include any elements which are necessary for the operation thereof.

Some embodiments of system 300 include a portable monitoring device having a physical size and shape adapted to couple to the body of a user, which allows the user to perform normal or typical user activities (including, for example, exercise of all kinds and type) without hindering the user from performing such activities. The portable monitoring device may include a mechanism (for example, a clip, strap and/or tie) that facilitates coupling or affixing the device to the user during such normal or typical user activities.

For example. during operation, an altitude sensor generates data which is representative of the altitude and/or changes in altitude of the user. A motion sensor generates data which is representative of motion of the user. The data which is representative of the altitude and/or changes in altitude and the data which is representative of the motion of the user, is used to determine energy and/or calorie “burn” of the user.

The data may also be used to determine other activity-related metrics including, for example, (i) in the context of running/walking on level, substantially level, or relatively level ground, (a) number of steps, which may be categorized according to the number of steps associated with a user state, for example, walking, jogging and/or running, (b) distance traveled and/or (c) pace, (ii) in the context of running/jogging/walking/jumping on stairs, hills or ground having a grade of greater than, for example, about 3%, (a) number of stair and/or hill steps, which may be categorized, correlated or organized/arranged according to the number of stair and/or hill steps pertaining to, for example, the speed, pace and/or user state of the user (for example, walking, jogging and/or running), (b) number of flights of stairs, (c) ascent/descent distance on stairs and/or hills, (d) pace, (e) ascent/descent on elevators and/or escalators, (f) number of calories burned or expended by walking/running on stairs and/or hills and/or (g) quantify/compare the additional calories expended or burnt from stairs/hills relative to, versus or over level ground, (iii) in the context of swimming, number of strokes, time between strokes, leg kicks and similar metrics (variance of stroke time, mean stroke time, etc.), depth underwater, strokes per lap, lap time, pace and/or distance, (iv) in the context of using a bicycle, wheelchair, skateboard, skis, snowboard, ladder, etc., (a) ascent/descent distance traversed, (b) number of additional calories expended, (c) time of a downward “run” or upward “climb”, (d) number of calories expended, (e) number of pedal rotations, (f) arm or wheel rotation, (g) the grade of the surface, (h) pushes, kicks and/or steps. This list of activities (if applicable to the particular embodiment) is merely exemplary and is not intended to be exhaustive or limiting.

FIG. 4 is a block diagram of device 400 according to some embodiments. Device 400 may comprise an implementation of system 300 of FIG. 3. Device 400 incorporates elements 410 through 460 into a single integrated package.

Elements 410 through 440 of device 400 may operate as described above with respect to similarly-numbered elements of system 300. Device 400 further includes sensor interface 450 for exchanging data with one or more sensors 460.

Sensors 460 may comprise any sensors for acquiring data based on which metric values may be determined. Examples of sensors 460 include, but are not limited to, an accelerometer, a light sensor, a compass, a switch, a pedometer, a blood oxygen sensor, a gyroscope, a magnetometer, a Global Positioning System device, a proximity sensor, an altimeter, and a heart rate sensor. One or more of sensors 460 may share common hardware and/or software components.

A value of a metric may be determined based on data acquired by one or more of sensors 460. For example, a value of a “distance traveled” metric may be determined based on the outputs of a Global Positioning System device and an altimeter. An “activity level” metric may be determined based on the outputs of a blood oxygen sensor and a heart rate sensor.

User 470 is pictured to indicate that, according to some embodiments, user 470 influences the data acquired by one or more of the one or more sensors 460. For example, the one or more sensors 460 may generate data based on physical activity of user 470. Moreover, one or more of sensors 460 may generate data via direct contact with the user, for example during heart rate, skin temperature, and/or blood oxygen monitoring.

In some embodiments, calorie expenditure and activity level may be determined based on or using, partially or entirely, the ambulatory speed of user 470. The speed of the user may be calculated, determined and/or estimated as the user's step count over a time epoch multiplied by one or more step lengths of the user (which may be programmed, predetermined and/or estimated (for example, based on attributes of the user (for example, height, weight, age, leg length, and/or gender))). Representative energy expenditure rates expressed as metabolic equivalents per minute (MET/min) may then be estimated, obtained (for example, from a look-up table or database) and/or interpolated from a MET table which provides metabolic equivalents per minute for different user speeds. In some embodiments, step length may be one of two values that are indicative of a walking step length and a running step length dependent on the step frequency and/or acceleration characteristics of the user. In some embodiments, step length may be described as a linear function of step frequency: step length=A+B*step frequency, where A and B are parameters that may be associated with or calibrated to the user. Such parameters may be stored in memory in device 400.

In some embodiments, the speed value may be converted to calorie expenditure by multiplying the corresponding MET value by the user's Body Mass Ratio (BMR). BMR may be obtained through any of a number of well-known equations based on height, weight, gender, age, and/or athletic ability or through designated BMR measurement devices. For example, a user may have a running step length of 57 inches and take 180 running steps during 1 min. Using the method described above, the user's speed estimate is 9.8 miles per hour, which may be linearly interpolated to provide a BMR value of 15.8 MET from the MET table above. Assuming the user's BMR to be 1.10 kcal/MET, the calorie burn of the user in the preceding minute is 17.4 kcal.

An intermediate MET calculation step is not required in this and similar methods. Calorie expenditure may be calculated directly based on speed and one or more physiological parameters of the user such as age, gender, height, weight, and/or athletic ability. Speed may also be filtered over time rather than accepted as a “raw” measurement for a given time epoch. All forms of speed estimation, and mechanisms to implement such techniques, whether now known and/or later developed, may be implemented in some embodiments

Calorie consumption, burn and/or expenditure may be determined using data which is representative of the intensity of user motion for example, as provided or determined by one or more single axis or multi-axis accelerometers, based on a heart rate, based on altitude-related information (for example, from an altimeter disposed on the portable monitoring device), and/or based on any combination of factors described herein.

FIG. 5 is a top view of one implementation of device 400 according to some embodiments. According to the illustrated embodiment, device 500 is wearable on a user's wrist. Device 500 includes display 540, which may comprise any suitable type of display screen, and which may display graphical indicators as described herein. Buttons 580 may be manipulated by a user to provide input to device 500. As described above, display 540 may also incorporate an input device (i.e., a touch screen). Band 590 may be wrapped around the wrist and is securable using securing elements 595 (e.g., hook and loop, clasp, shape memory elements).

FIG. 6 is a bottom view of device 500, showing sensor protrusion 610 and power interface 620. Sensor protrusion 610 may include sensors which benefit from close proximity and/or contact with a user's skin. Such sensors may include heart rate, moisture and/or temperature sensors. Power interface 620 may interface with a docking station or other power source to receive electrical charge for charging of batteries located within device 500. Embodiments are not limited to device 500 in terms of function, features and/or form factor.

FIG. 7 is a flow diagram of process 700 according to some embodiments. Process 700 and the other processes described herein may be performed using any suitable combination of hardware or software, including implementations of system 300, device 400 and/or device 500. Software embodying these processes may be stored by any non-transitory tangible medium, including a fixed disk, a floppy disk, a CD, a DVD, a Flash drive, or a magnetic tape.

Initially, at S710, a value of a metric is determined for a particular time interval. The metric may comprise any metric described herein or that is (or becomes) known. The value of the metric may be indicative of physical activity, as also described above.

The value may be determined based on data/signals acquired from any number of sources. According to some embodiments, sensor 610 of device 500 acquires signals from contact with a user over a time interval and determines a value of a heart rate metric based on the detected signals. In some embodiments, an accelerometer of device 500 detects movement during a time interval and determines a step count value based on the detected movement. Determination of the value may also be based on stored data, such as user body characteristics, dietary information, etc.

Next, at S720, a graphical indicator associated with the time interval is determined. As described above, a length of the graphical indicator represents the determined value of the metric. The determined value may further be represented by colors, shapes or other graphical characteristics of the graphical indicator.

The graphical indicator is displayed on a display at S730. A position of a first end of the graphical indicator on the arc of a circle indicates the time interval associated with the graphical indicator. FIG. 8 provides an example of the foregoing. It will be assumed that graphical indicator 810 is displayed on display 840 at S730. A first end of graphical indicator 810 and the other previously-displayed graphical indicators of visualization 800 substantially trace an arc of a circle. A position of the first end of graphical indicator 810 on the arc indicates the time interval associated with the graphical indicator 810. The indicated time interval, based on visualization 800's implied layout of an analog clock, is the fortieth minute of the current hour.

According to some embodiments, the angular distance of the arc traced by the graphical indicators indicates the current time. For example, if graphical indicator 810 is associated with the fortieth minute of the current hour, then the current time is forty-first minute of the current hour. Although the graphical indicators therefore provide an intuitive indication of the current time, visualization 800 also includes the current time 850 in the center of the circle which is implicitly formed by the graphical indicators.

Flow returns to S710 from S730 and continues as described above. Specifically, a second value of the metric is determined for a second time interval, a second graphical indicator associated with the second time interval is determined based on the second value of the metric, and the second graphical indicator is displayed such that a position of a first end of the second graphical indicator on the arc of a circle indicates the second time interval.

FIG. 9 illustrates visualization 800 after a subsequent execution of S710-S730. Graphical indicator 815 is now displayed in display 840, along with new current time 850. A position of the first end of graphical indicator 815 on the arc indicates the forty-first minute of the current hour. Also, according to the embodiment of FIG. 9, visualization 800 also includes icon 860, which identifies the metric (i.e., step count) whose values are represented by the displayed graphical indicators.

FIGS. 10A and 10B comprise process 1000 according to some embodiments. Embodiments are not, however, limited to the features of process 1000.

Prior to process 1000, it will be assumed that a device embodying process 1000 is activated (i.e., powered on, woken from sleep, etc.) or otherwise instructed to enter a mode for displaying a visualization according to some embodiments.

Initially, at S1005, a current time is determined. The current time may be determined from a network to which the device is connected (i.e., wired or wirelessly), from an on-board clock, or by other means.

Next, at S1010, a value of a metric is determined for each of a plurality of time intervals of the current hour. For example, it will be assumed that a current time of 12:41pm is determined at S1005. According to some embodiments, a value of the metric is determined for each completed minute of the current hour (i.e., for each of forty completed minutes). Time intervals are not limited to single minutes in some implementations, as described above. It will be assumed that the metric in the current example is step count, therefore forty step count values are determined at S1010.

For each of the plurality of time intervals, a graphical indicator associated with the time interval is determined at S1015. As previously described, a length of a graphical indicator represents the value of the metric for the time interval associated with the graphical indicator. The plurality of graphical indicators are displayed at S1020 to substantially trace an arc of a circle. FIG. 8 provides an illustration of such a display according to the present example. As shown, a position of a first end of each of the plurality of graphical indicators on the arc indicates a time interval associated with each graphical indicator.

Next, at S1025, a signal indicative of physical activity over a next time interval is detected. In the present example, the next time interval is the forty-first minute of the hour, since values have been determined for the initial forty minutes of the hour. The signal may be detected by a sensor such as those already described. More than one signal from more than one sensor may be detected at S1025, depending on the information needed to determine a value of the particular metric being evaluated. In this regard, a next value of the metric is determined at S1030 and, as described with respect to S720, a graphical indicator representing the value and associated with the next time interval is determined at S1035.

As illustrated by graphical indicator 815 of FIG. 9, the graphical indicator determined at S1035 is displayed at S1040. A position of a first end of the graphical indicator on the arc indicates its associated time interval (i.e., the forty-first minute).

At S1045, it is then determined whether the metric of interest has changed. According to some embodiments, the metric of interest may change to another metric based on a schedule, in which case S1045 consists of confirming the schedule. In some embodiments, a user may issue a command to change the schedule. The command may be issued via buttons such as buttons 580, or by performing a touch screen gesture, such as a swipe, upon display 540. Any suitable input modality may be used to issue such a command.

If it is not determined to change the metric at S1045, it is determined whether the current time has entered a new hour. If not, flow continues to S1025 and to determine a new value and to display a corresponding new graphical indicator at an appropriate position on the arc of the circle.

Upon determining at S1045 that the metric is to be changed, flow returns to S1010 to determine a plurality of values of the new metric for a plurality of time intervals of the current hour (S1010), to determine a graphical indicator for each of the values (S1015), and to display the graphical indicators (S1020). FIG. 11 illustrates display of such graphical indicators according to some embodiments. Each graphical indicator of visualization 1100 represents a value of the new metric (e.g., heart rate) associated with a time interval indicated by a position of the graphical indicator. Icon 1110 now indicates the new metric, signaling to the user that the metric has changed.

On the other hand, if it is determined at S1050 that a new hour has arrived, flow returns to S1010 to determine a plurality of values of the new metric for a plurality of time intervals of the new hour (S1010), to determine a graphical indicator for each of the values (S1015), and to display the graphical indicators (S1020). Upon returning to S1010 from S1050 during the first minute of the hour, no time intervals of the new hour will have elapsed, so the first value and graphical indicator of the hour are determined at S1030 and S1035. The graphical indicator is displayed at S1040 as part of a new visualization, as illustrated by visualization 1200 of FIG. 12. Flow may then continue as described above to determine and display graphical indicators associated with the current metric or with another metric detected at S1045.

The foregoing diagrams represent logical architectures for describing processes according to some embodiments, and actual implementations may include more or different components arranged in other manners. Other topologies may be used in conjunction with other embodiments. Moreover, each system described herein may be implemented by any number of devices in communication via any number of other public and/or private networks. Two or more of such computing devices may be located remote from one another and may communicate with one another via any known manner of network(s) and/or a dedicated connection. Each device may include any number of hardware and/or software elements suitable to provide the functions described herein as well as any other functions. For example, any computing device used in an implementation of some embodiments may include a processor to execute program code such that the computing device operates as described herein.

All systems and processes discussed herein may be embodied in program code stored on one or more non-transitory computer-readable media. Such media may include, for example, a floppy disk, a CD-ROM, a DVD-ROM, a Flash drive, magnetic tape, and solid state Random Access Memory (RAM) or Read Only Memory (ROM) storage units. Embodiments are therefore not limited to any specific combination of hardware and software.

Those in the art will appreciate that various adaptations and modifications of the above-described embodiments can be configured without departing from the scope and spirit of the claims. Therefore, it is to be understood that the claims may be practiced other than as specifically described herein. 

1. A device, comprising: a display; one or more processors; a memory; and program code, wherein the program code is stored in the memory and configured to be executed by the one or more processors, the program code including instructions for: displaying a plurality of graphical indicators on the display, each of the plurality of graphical indicators associated with a respective time interval, wherein, for each of the plurality of graphical indicators, a length of the displayed graphical indicator represents a value of a metric associated with the respective time interval of the graphical indicator, wherein first ends of each of the plurality of graphical indicators substantially trace an arc of a circle, and wherein, for each graphical indicator, a position of the first end of the graphical indicator on the arc of the circle indicates the respective time interval associated with the graphical indicator.
 2. A device according to claim 1, wherein the value of the metric associated with a respective time interval is indicative of physical activity during the respective time interval.
 3. A device according to claim 2, further comprising: a sensor to detect a signal indicative of physical activity, and the program code including instructions for: determining the value of the metric associated with a respective time interval based on the signal.
 4. A device according to claim 3, wherein the sensor comprises at least one of: an accelerometer; a light sensor; a blood oxygen sensor; a gyroscope; a magnetometer; a Global Positioning System device; a proximity sensor, an altimeter; and a heart rate sensor.
 5. A device according to claim 1, wherein the metric comprises one of: step count, heart rate, distance traveled, activity level, altitude changes, altitude ascended, altitude descended, floors climbed, and calories burned.
 6. A device according to claim 1, wherein arcs of the circle represent a plurality of time intervals totaling one hour.
 7. A device according to claim 1, wherein arcs of the circle represent a plurality of time intervals totaling twelve hours.
 8. A device according to claim 1, wherein arcs of the circle represent a plurality of time intervals totaling twenty-four hours.
 9. A device according to claim 1, wherein arcs of the circle represent a plurality of time intervals totaling one minute.
 10. A device according to claim 1, wherein arcs of the circle represent a plurality of time intervals totaling one week.
 11. A device according to claim 1, the program code further including instructions for: displaying a current time within the circle.
 12. A device according to claim 1, the program code further including instructions for displaying within the circle one of a current value of a step count, a current value of a heart rate, a current value of a distance traveled, a current value of an activity level, a current value of an altitude change, a current value of an altitude ascended, a current value of an altitude descended, a current value of floors climbed, and a current value of calories burned. 13.-28. (canceled)
 29. A method, comprising: displaying a plurality of graphical indicators on a display, each of the plurality of graphical indicators associated with a respective time interval, wherein, for each of the plurality of graphical indicators, a length of the displayed graphical indicator represents a value of a metric associated with the respective time interval of the graphical indicator, wherein first ends of each of the plurality of graphical indicators substantially trace an arc of a circle, and wherein, for each graphical indicator, a position of the first end of the graphical indicator on the arc of the circle indicates the respective time interval associated with the graphical indicator.
 30. A method according to claim 29, further comprising: detecting a signal indicative of physical activity; and determining the value of the metric associated with a respective time interval based on the signal.
 31. A method according to claim 29, further comprising displaying a current time within the circle, wherein the angular distance of the arc of the circle indicates the current time.
 32. A method according to claim 29, wherein one of the plurality of graphical indicators associated with a respective time interval comprises M graphical icons, and wherein M represents a value of the metric associated with the respective time interval.
 33. A device according to claim 32, wherein each graphical icon represents N units of the metric, and the value of the metric is approximately equal to M*N.
 34. A method, comprising: displaying a plurality of graphical indicators on a display, each of the plurality of graphical indicators comprising a respective number of graphical icons and associated with a respective time interval and, wherein first ends of each of the plurality of graphical indicators substantially trace an arc of a circle, wherein, for each graphical indicator, the respective number of graphical icons of the graphical indicator represents a value of a metric associated with the respective time interval of the graphical indicator, the value of the metric being indicative of physical activity during the respective time interval, and wherein, for each graphical indicator, a position of the first end of the graphical indicator along the arc of the circle indicates the respective time interval associated with the one of the plurality of graphical indicators.
 35. A method according to claim 34, further comprising: detecting a signal indicative of physical activity; and determining the value of the metric associated with a respective time interval based on the signal.
 36. A method according to claim 34, further comprising displaying a current time within the circle, wherein the angular distance of the arc of the circle indicates the current time. 37.-41. (canceled) 